Fushi no Majo wa Man no Inochi wo Gisei ni Shite mo Arikitari na Negai wo Kanaetai.

Reborn into a new world as an undead, immortal witch lich who looks like a young girl, Yuurai is taken into custody by royal guards accused of slaying a princess and puppeteering her body. Under torture, she invokes her "Descend into Darkness" ability, devouring twenty thousand souls to seize the formidable strength of a Demon Lord, an act that immediately marks her for elimination. Pursued by holy knights and elite adventurers, she is eventually confronted by a royal force ten thousand strong. Despite wishing only for a quiet life, she finds herself unable to escape the relentless cycle of conflict around her.